The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1712
Hash: 49cbcf805a7ebd524cc58461aa666d2e56e10fd8a271185fe308bfe0460ec3b7
Previous block: 5775fb906ee4feef187833515de06fffbda3d85cf5cc9d6064e7564eb4fb2634
Next block: 215377a5117a948a97613fd46eebd11937e6c9e11fe131fcea9d88222f18de81
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159209
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: a4c22b6925367a8bc54ee86b546e7f070f7e2972be3a805bb1c596f042819876
Median time: 1719159208
Difficulty: 4.656542373906925e-10
Confirmations: 532
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d62
Bits: 207fffff